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README.md

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+# `numlock-indicator`
+
+This powershell script adds a small indicator to the system tray to indicate when the numlock is enabled.
+
+Copy files to some directory and run `powershell systray.ps1`. You can also run `start.sh` to ensure that one copy of the script is always active.
+
+I wrote this because for some reason, my laptop keyboard has no LED indicator for the numlock key (yet they have one for capslock and speakers???)
+
+Feel free to replace `icon.png` with any bitmap icon if you don't like my terrible pixel art.

start.sh

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+# Ensures one copy of the program is always active. Not necessary for operation.
+while true; do
+    powershell './systray.ps1'
+done

systray.ps1

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+[System.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms') | Out-Null
+$ICON = [System.Drawing.Icon]::FromHandle(([System.Drawing.Bitmap]::FromFile($(Join-Path $pwd '\icon.png'))).GetHicon()) # Convert my png (bitmap) to an icon
+# $ICON = [System.Drawing.Icon]::ExtractAssociatedIcon() # Feel free to use a system icon
+ 
+function NewTrayIcon(){
+    $TrayIcon = New-Object System.Windows.Forms.NotifyIcon
+    $TrayIcon.Text = "NumLock on"
+    $TrayIcon.Icon = $ICON
+
+    $TrayIcon.Add_Click({ # In case our script stops working, allow user to kill icon so that their system tray isn't cluttered
+        $TrayIcon.Visible = $false
+        $TrayIcon.Dispose()
+        Stop-Process $pid
+    })
+
+    return $TrayIcon
+}
+While ($true) {
+    While ($TrayIcon.Text) {
+        If ([console]::numberlock) {
+            If (!$TrayIcon.Visible) {
+                $TrayIcon.Visible = $true
+            }
+        } ElseIf ($TrayIcon.Visible) {
+            $TrayIcon.Visible = $false
+        }
+        Start-Sleep -Seconds 1 # Set this to whatever polling rate you want.
+    }
+    $TrayIcon = NewTrayIcon
+}